Sash lock and lift.



-N0. 69l,348. Patented lan. 2|, i902.

T., BEBDUIST. I SASH LOCK AND LIFT.

I (Application filed. July 10, 1901.)

(No Model.)

To alt whom it may concern.-

of Visconsin, have invented new and useful UNITED STATES PATENT OFFICE.

THOMAS BERQUIST, OF ST. CROIX FALLS, \VISCONSIN.

SASH LOCK AND LIFT.

SPECIFICATION forming part of Letters Patent No. 691,348, dated January 21, 1902.

Application filed July 10, 1901.

Be it known that I, THOMAS BERQUIST, a citizen of the United States, residing at St. Croix Falls,'in the county of Polk and State Improvements in a Combined Sash Lock and Lift, of which the followingis a specification.

This invention relates to combined sash. locks and lifts, the primary object being to provide a simple, novel, and effective device of this character in which the locking and lifting means are combined in one and the sash automatically locked and unlocked by the operation of the lifting element.

A further object of the invention is to provide a latch so constructed that the lifting and unlocking lever will when the sash is lowered and locked efiectually prevent the latch from being casually retracted.

Generally, the invention consists of these and other novel features of construction, combination, and arrangement of parts, which will hereinafter be more fully described and claimed.

In the drawings, Figure l is a vertical section of the lower part of a window sash and frame, showing my invention as applied. Fig. 2 is a front elevation of my invention detached. Fig. 3 is a rear elevation of the same. Fig. 4 is an elevation of the keeper-plate, the same being detached.

Referring now more particularly to the drawings, the numeral 1 designates the bottom rail of a window-sash having upon its inner side a cut-out portion or chamber 2 for the reception of the latch mechanism, the inner face of the rail being recessed at 3 around said chamber to receive the bearing-plate 4, which serves as a closure for said chamber and a support for said latch mechanism. This plate is formed with perforations 5 for the passage of screws or other fastening devices for securing it to the sash.

Projecting from the inner face of the plate 4 are lugs 6, between which is pivoted, upon a pin 7 fitted in said lugs, an elbow-latch 8, which is thus movably mounted in the chamber 2. The lower arm of this latch projects inwardly and forms a locking toe or projection 9, which fits and moves within a slot 10, formed in the lower end of the plate 4, and is adapted to engage a slot or opening 11,

gerial No. 67,731. KNomodel.)

formed in a keeper-plate 12, provided with perforations 13 for the passage of fastening devices securing it to the sill or stop-head 14 of the sash-frame. vThis plate 12' covers a socket or recess 15, formed in the sill 14 and aifording sufiicient space for the free movement of the said locking-toe 0. and longer arm '16 of the latch projects upwardly within the chamber 2, and its upper end is bifurcated, as at 17. In the slot of said bifurcation is loosely fitted the free end of the inner arm' 18 0f a substantially L- shaped lever 19. The'opposite arm 20 of the lever-19 projects to the exterior through an opening 21 in the plate 4 and is curved and enlarged to form a finger-piece whereby it may be conveniently manipulated. The lever is provided at thejunction of its arms 18 and 20 with a lug or block 22, which fits between lugs 23 on the inner side of the plate 4 and is pivoted thereto by a pin 24. The

inner arm 18 of the lever 19 is bent or curved and slotted, as at 25, so as to allow of the free movement of the latch and to accommodate itself to the position of p the latch when retracted, also to enable it to rest in arecess 26 at the upper end of one of the legs of the bifurcation of the latch-arm 16 to hold the latch securely in looking position.

Upon the inner face of the plate 4 is secured a spring 27, one end of which rests against a lug 28 upon the lower arm of the latch 8 and serves to withdraw the lockingtoe 9 from the slot 11 of the keeper-plate 12 when the inner'arm 18 of the latch 19 is Withdrawn from the recess 26 and to maintain the parts in retracted position when the sash is raised. a

Fig. 1 of the drawings shows the locking position of the latch and lever, from which it will be seen that when the latch is projected the toe 9 thereof is inserted within the slot 11 in the keeper-plate 12 and holds the sash closed, and the free end of the arm 18 of the lever engages the recess 26 and prevents the latch from being accidentally retracted. When, however, the finger-piece is grasped and elevated to the extent of withd rawing the inner arm 18 of the lever 19 from the recess 26, the spring 27 will retract the locking-toe 9, leaving the sash free to be raised. The curvature of and the slot in the arm 18 per- The other I the latch, and the spring 27 serves to maintain the parts in retracted position until the sash is lowered and the toe 9 projected to lock the sash by pressing the finger-piece 20, so that the toe 9 will not project and form an obstruction liable to contact and tear window shades and curtains.

From the foregoing description, taken in connection with the accompanying drawings, the construction, mode of operation, and advantages of the invention will be readily understood, and it will be seen that a simple, cheap, durable, and effective device -is provided which is applicable to window-sashes of any of theordinary types in common use.

Havingthus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a combined sash lock and lifter, the combination with the sill provided with a keeper, and the sash with a chamber or mortise, of a supporting-plate closing the chamber and provided with a slot to register with the keeper when the sash is lowered, an L- shaped latch pivoted to the plate within the chamber and having a short arm forming a locking-toe movable in said slot, and a long arm having its end bifurcated and a recess at its upper end, an L-shaped lever pivoted to latch pivoted to the sash and having its short arm forming alocking toe to engage said keeper and its upper arm bifurcated, one of the legs of the bifurcation having a recess, an L-shaped lever having one arm a finger-piece and its other arm fitting and moving within the slot of the bifurcation and adapted to rest in said recess to hold the latch projected, a lug on said latch, and a spring bearing against said lug to retract the latch when the arm of the lever is withdrawn from said recess.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS BERQUIST.

\Vitnesses:

E. M. CHILD, FRANK B. DOROTHY. 

